Why does the cyclist have less kinetic energy at position a than at position b?

options are

a. their is less friction between the tire and the road at position a than at position b.

b. their is more friction between the tire and the road at position a than at position b

c. the cyclist has less speed at position a than position b.

d. the cyclist has greater speed at position a than position b.

the answer is A. Their is less friction between the tire and the road at position A than at position B.

33: i think it’s b

answer: the exterior temperature of commercial jet planes as they leave the stratosphere and return to the ground increases steadily.

explanation:

the lower most layer of atmosphere is troposphere which extends from 0 to 12 km above the surface of the earth. the temperature initially decreases as distance is increased from the earth's surface. commercial jets fly in lower part of the stratosphere. the stratosphere extends upto 50 km. the temperature in stratosphere starts rising again due to presence of ozone which traps the uv rays.

thus, when the planes leave the stratosphere and return to the ground, the exterior temperature increases steadily.